EP 4137245 A4 20231011 - PRESS-FORMING MOLD AND PRESS-FORMING METHOD
Title (en)
PRESS-FORMING MOLD AND PRESS-FORMING METHOD
Title (de)
PRESSFORM UND PRESSFORMVERFAHREN
Title (fr)
MOULE DE FORMAGE SOUS PRESSION ET PROCÉDÉ DE FORMAGE SOUS PRESSION
Publication
Application
Priority
- JP 2020090158 A 20200523
- JP 2021014848 W 20210408
Abstract (en)
[origin: EP4137245A1] A press forming tool 13 according to the present invention are configured to form a press forming part 1, the press forming part 1 including: a top portion 3 having a convex and concave outer edge part 11 in which a convex outer edge part 11a protruding outward in an in-plane direction and a concave outer edge part 11b recessed inward in the in-plane direction are continuous to each other via a connecting outer edge part 11c; and a flange portion 5 formed continuously from the convex and concave outer edge part 11 of the top portion 3, the press forming tool 13 including: an upper die 15 and a lower die 17; and a lower pad 21 and an upper pad 23, which sandwich a blank 19 in cooperation with the upper die 15 and the lower die 17, in which, during an initial stage of forming, the flange portion 5 is formed on the convex outer edge part 11a, and a torsional shape portion 25 having a torsional shape toward the concave outer edge part 11b is formed continuously from the flange portion 5, and during a late stage of forming, the torsional shape portion 25 is formed into the flange portion 5, and the flange portion 5 is formed in the concave outer edge part 11b so as to achieve formation of a target shape.
IPC 8 full level
B21D 24/00 (2006.01); B21D 19/08 (2006.01); B21D 22/26 (2006.01)
CPC (source: EP KR US)
B21D 19/08 (2013.01 - EP KR US); B21D 22/22 (2013.01 - EP); B21D 22/26 (2013.01 - EP KR US); B21D 24/005 (2013.01 - KR US); B21D 53/88 (2013.01 - EP KR); B21D 24/005 (2013.01 - EP); B21D 53/88 (2013.01 - US)
Citation (search report)
- [A] JP 2007253173 A 20071004 - PRESS KOGYO KK
- [A] JP 2019171440 A 20191010 - JFE STEEL CORP
- [A] EP 3476500 A1 20190501 - NIPPON STEEL & SUMITOMO METAL CORP [JP]
- See references of WO 2021241025A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 4137245 A1 20230222; EP 4137245 A4 20231011; CN 115666811 A 20230131; JP 2021184998 A 20211209; JP 6981502 B2 20211215; KR 20230002914 A 20230105; MX 2022014334 A 20221213; US 2023182189 A1 20230615; WO 2021241025 A1 20211202
DOCDB simple family (application)
EP 21813956 A 20210408; CN 202180035890 A 20210408; JP 2020090158 A 20200523; JP 2021014848 W 20210408; KR 20227040620 A 20210408; MX 2022014334 A 20210408; US 202117925961 A 20210408